Datakom DKM-409 PRO AT, Руководство пользователя

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DKM-409 Pro AT User Manual Rev_02 Firmware V-2.5
CORRECT CT CONNECTIONS
Let’s suppose that the network is loaded with 100 kW on each phase. The load Power Factor (PF) is 1.
Measured values are as follows:
kW kVAr kVA pf
Phase L1 100.0 0.0 100 1.00
Phase L2 100.0 0.0 100 1.00
Phase L3
100.0 0.0 100 1.00
Total 300.0 0.0 300 1.00
EFFECT OF POLARITY REVERSAL
The network is still loaded with 100 kW On each phase. The load Power Factor (PF) is 1.
PF in phase L2 will show -1,00 due to reverse CT polarity. The result is that total network power displayed
by the controller is 100 kW.
Measured values are as follows:
kW kVAr kVA pf
Phase L1 100.0 0.0 100 1.00
Phase L2 -100.0 0.0 100 -1.00
Phase L3
100.0 0.0 100 1.00
Total 100.0 0.0 300 0.33